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Homework Help: Magnet, Magnetic field, null points.

  1. May 10, 2010 #1
    Is it possible to place a magnet bar in such a position in the earth's field that no zero points are present? Explain your reasoning.

    Null points exist where the field due to the magnet is equal and opposite to the horizontal component of the earth's field.

    In our lab we oriented the magnet E/W, and N/S. I feel that you would always have the possibility of zero/null points, but I don't quite understand the concept behind why. Like where the horizontal component of the earth's field goes and how the field from the magnet interacts with the field from earth.
     
  2. jcsd
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